"""
面试题：
    phthon的关键字有哪些？（ and  as   from  in  is  not  or）
and	 		as 	  assert 	break
class 		continue 		def 		del
elif 		else 			except		finally
for 			from 			global 	if
import 		in 				is 			lambda
nonlocal 	not 			or 			pass
raise 		return 		try 		while
with 		yield
False 		None 	True

"""
